Complete the indicated task to unlock the achievement.

Achievement	How to unlock
A Bye Bye	Unknown.
A New Challenger	Unknown.
A Real Workout	Unknown.
An Explosive Entrance	Enter the Penthouse.
Back at me!	Catch a boomerang.
Bona fide bargain	Obtain an item from the Pawn Shop.
Carpe diem	Unknown.
Completionist	Reach 100% completion.
Defeating the Dark Arts	Unknown.
Don't mess with us!	Complete the game in Co-Op.
Fashionable Beatdown	Unknown.
Friendly Beatdown	Defeated an enemy by hitting them with another enemy.
Full Service	Destroy a vending machine.
Help an Old Pal?	Unknown.
Killed by Math	Unknown.
Like Father Like Daughter	Unknown.
Master of Unlocking	Find the keys in the junk yard.
O.M.G. Seriously?	Unknown.
Perfect Parry	Parry 10 enemy attacks.
Power Up	Reached Max Level.
Renegade	That wasn't very nice!
River City Ransom	Collected $5000
Shop until they drop?	Enter the Mall.
Smashed Statues	Unknown.
So Metal	Unknown.
Stylish!	Equip a new outfit.
TAKE THE WORLD ON	Completed the game on Hard.
You're out!	Unknown.
Your lessons are boring!	Unknown.